Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
Atomization and Sprays
IF: 1.189 5-Year IF: 1.596 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Print: 1044-5110
ISSN Online: 1936-2684

Volume 28, 2018 Volume 27, 2017 Volume 26, 2016 Volume 25, 2015 Volume 24, 2014 Volume 23, 2013 Volume 22, 2012 Volume 21, 2011 Volume 20, 2010 Volume 19, 2009 Volume 18, 2008 Volume 17, 2007 Volume 16, 2006 Volume 15, 2005 Volume 14, 2004 Volume 13, 2003 Volume 12, 2002 Volume 11, 2001 Volume 10, 2000 Volume 9, 1999 Volume 8, 1998 Volume 7, 1997 Volume 6, 1996 Volume 5, 1995 Volume 4, 1994 Volume 3, 1993 Volume 2, 1992 Volume 1, 1991

Atomization and Sprays

DOI: 10.1615/AtomizSpr.2018020769
pages 111-140


Sampath K. Rachakonda
University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA
Yue Wang
David P. Schmidt
Department of Mechanical and Industrial Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA


Nondimensional groups were identified and correlations were established to initialize flash-boiling spray for use in Lagrangian/Eulerian spray simulations. The objective was realized through CFD simulations with nonequilibrium interphase heat transfer and an Eulerian-Eulerian spray model. Parametric studies were carried out on 2D axisymmetric straight and stepped nozzles to study the effects of geometric and operating conditions on the near-nozzle spray. The effects of the inlet corner radius, nozzle diameter, counter-bore diameter and the inner nozzle length were assessed along with the effects of varying injection and ambient pressures and the fuel temperature as part of this study. The influence of these parameters on the coefficient of discharge, the spray-cone angle, and the Sauter mean diameter (SMD) were analyzed both qualitatively and quantitatively. Results indicate that the inlet corner radius dominates the coefficient of discharge; the time available for the fuel to vaporize determines the magnitude of the spray-cone angle. The SMD is dominated by the extent of the fuel superheat, defined as a ratio of the ambient to the saturation pressure of the fuel. The established correlations were incorporated using a user-defined function as a means to initiate flash-boiling Lagrangian spray. The simulated downstream spray angle and SMD were validated against experimental results.